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    Wyświetlanie 1-2 z 2
    Tytuł:
    An appraisal in pollen biology and fruit set of some ethnomedicinal angiosperms in Darjeeling Himalaya
    Autorzy:
    Bhattacharya, Ashoke
    Powiązania:
    https://bibliotekanauki.pl/articles/1062971.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Ethnomedicinal angiosperms
    fruit set
    pollen production
    pollen sterility
    pollen viability
    stigma receptivity
    Opis:
    The present paper deals with pollen biology in terms of pollen productivity, pollen sterility and pollen viability in the context of fruit set of eight selected ethnomedicinally important angiospermic taxa like Aconitum heterophyllum Wall. (Ranunculaceae); Aeschynanthus sikkimensis (Cl.) Stapf. (Gesneriaceae); Curcuma zeodaria Rosc. (Zingiberaceae); Nardostachys jatamansi DC. (Valerianaceae); Panax pseudoginseng Wall. (Araliaceae); Swertia pedicillata Ban. (Gentianaceae); Thalictrum foliolosum DC. (Ranunculaceae) and Zanthoxylum oxyphyllum Edgew. (Rutaceae) growing in the vicinity of Darjeeling Himalaya. Among the investigated taxa, pollen productivity, sterility and viability were highest in Curcuma zeodaria and lowest in Swertia pedicillata. The variability and positive correlation of log values between pollen production, sterility, viability and fruit set of selected taxa were noticed. From present finding it is concluded that the pollen biology in terms of productivity, sterility, viability and fruit set showed significant variation and correlation with each other among different selected taxa and even within same taxon. The results are discussed in terms of evolutionary relationship and sexual fitness of selected ethnomedicinal plants.
    Źródło:
    World Scientific News; 2019, 124, 2; 193-203
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative study for effects of chemical mutagenesis on seed germination, survivability and pollen sterility in M1 and M2 generations of Dianthus
    Autorzy:
    Roychowdhury, Rajib
    Alam, Molla Jaunatul Ferdousul
    Bishnu, Sunanda
    Dalal, Tinkari
    Tah, Jagatpati
    Powiązania:
    https://bibliotekanauki.pl/articles/2199631.pdf
    Data publikacji:
    2012-04-19
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    chemical mutagen
    Dianthus caryophyllus
    mutant generation
    pollen sterility
    seed germination
    Opis:
    Chemical mutagenesis is an efficient tool used in mutation breeding programme for improving various vital characteristics in floricultural crop, like Dianthus. In this study, ethyl methane sulphonate (EMS), sodium azide (SA) and colchicine (COL) with three different concentrations (0.1%, 0.4% and 0.7%) were used to analyse their effect on seed germination behaviour, survivability and pollen sterility in both first (M1) and second (M2) mutant generations. It was noted that increase in the dose of EMS and SA, germination percentage and survivability were decreased; whereas colchicine doses were proportional to increase germination percentage at seedling stage, but they were not survived till maturity. In M1 and M2, higher lethality over control (44.3 and 32.89, respectively) was shown by 0.7% of SA and EMS, respectively. Pollen sterility was also increased with increasing mutagenic doses. The maximum pollen sterility was 71.8% and 61.1% for 0.7% COL in M1 and M2, respectively. So, the effect of chemical mutagenesis on biological parameters with SA (0.7%) treatment in M1 and EMS (0.7%) treatment in M2 were much more beneficial as compared to colchicine. For each studied parameter, chemical mutagenesis was higher in M1 than M2. Hence, for the first time in Dianthus, we reported that these mutagens can be used for improving the germination behaviour and the metrical traits in Dianthus cultivar.
    Źródło:
    Plant Breeding and Seed Science; 2012, 65; 29-38
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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